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Quantification of non-stoichiometry in YAG ceramics using laser-induced breakdown spectroscopy

NCJ Number
304250
Author(s)
S. J. Pandey; et al
Date Published
2017
Length
6 pages
Annotation

This article reports on a project that indicates laser-induced breakdown spectroscopy (LIBS) is a well-suited technique for the assessment of non-stoichiometry in yttrium aluminum garnet (YAG) ceramics and that the aluminum to yttrium ratio can be determined with a resolution of 0.3 mol percent, well within the phase boundaries of YAG.

Abstract

Strict control of composition is of paramount importance for the reproducible fabrication of advanced ceramics. In particular, the preparation of high-grade transparent ceramics of definite line-compounds requires that the ratio of major constitutive elements be quantified with a precision better than a fraction of a mole percent to prevent the precipitation of secondary phases and the scattering of light. Such a requirement poses difficult challenges to most analytical methods, especially when applied to nearly-stoichiometric insulating phases. (publisher abstract modified)

 

Date Published: January 1, 2017